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Coupled Power Inductors
LPD4012 Series

Coupled, low profile power inductor – only 1,1 mm high, 4 mm square
Shielded coupled inductors for Flyback, SEPIC and other applications
See Selecting inductors for SEPIC and SEPIC Inductor Selector tool
Excellent coupling coefficient: K > 0.94
Also suitable for use as common mode chokes
100 V winding-to-winding isolation
RoHS-compliant. 260°C compatible. Silver-palladium-platinum-glass frit terminations
COTS Plus tin-silver-copper and tin-lead terminations available
Samples of all values are available in Coilcraft Designer's Kit C422

Photo Pricing Materials declaration PDF data sheet

SPECIFICATIONS

L vs Frequency L vs Current Current Derating Core loss

Schematics Dimensions Tape and reel specifications 3D model


LPD4012-331NL_	0.33 ±30%	0.042	255	0.94	0.06	5.2	5.4	5.6	1.87	2.65
LPD4012-561NL_	0.56 ±30%	0.087	185	0.95	0.08	3.7	3.8	3.9	1.30	1.84
LPD4012-821NL_	0.82 ±30%	0.100	130	0.97	0.09	3.2	3.3	3.4	1.21	1.72
LPD4012-152NL_	1.5 ±30%	0.185	86	0.97	0.11	2.50	2.81	2.91	1.15	1.62
LPD4012-222NL_	2.2 ±30%	0.235	70	0.98	0.14	2.30	2.40	2.50	0.95	1.35
LPD4012-332NL_	3.3 ±30%	0.320	48	0.98	0.16	1.80	1.90	2.00	0.75	1.06
LPD4012-472ML_	4.7 ±20%	0.500	39	0.98	0.18	1.60	1.70	1.80	0.65	0.92
LPD4012-562ML_	5.6 ±20%	0.620	32	0.99	0.20	1.50	1.60	1.60	0.55	0.78
LPD4012-682ML_	6.8 ±20%	0.530	31	0.99	0.22	1.20	1.52	1.63	0.60	0.86
LPD4012-822ML_	8.2 ±20%	0.600	29	0.99	0.24	1.10	1.20	1.30	0.55	0.78
LPD4012-103ML_	10 ±20%	0.750	25	0.99	0.26	0.98	1.00	1.10	0.50	0.71
LPD4012-153ML_	15 ±20%	1.13	21	0.99	0.30	0.90	0.92	0.93	0.43	0.60
LPD4012-223ML_	22 ±20%	1.63	15	0.99	0.34	0.70	0.82	0.84	0.34	0.48
LPD4012-333ML_	33 ±20%	1.83	12	>0.99	0.41	0.37	0.57	0.58	0.31	0.44
LPD4012-473ML_	47 ±20%	2.52	8.8	>0.99	0.51	0.33	0.39	0.40	0.28	0.39
LPD4012-683ML_	68 ±20%	3.23	7.8	>0.99	0.66	0.27	0.36	0.37	0.25	0.36
LPD4012-823ML_	82 ±20%	3.66	7.3	>0.99	0.75	0.27	0.27	0.29	0.23	0.31
LPD4012-104ML_	100 ±20%	4.76	6.1	>0.99	0.86	0.22	0.28	0.29	0.20	0.27
LPD4012-124ML_	120 ±20%	5.54	5.3	>0.99	0.98	0.21	0.26	0.27	0.19	0.27
LPD4012-154ML_	150 ±20%	6.90	4.6	>0.99	1.19	0.18	0.26	0.27	0.17	0.23
LPD4012-184ML_	180 ±20%	8.75	4.1	>0.99	1.40	0.16	0.21	0.23	0.14	0.18
LPD4012-224ML_	220 ±20%	11.24	3.3	>0.99	1.66	0.15	0.16	0.17	0.12	0.17
LPD4012-334ML_	330 ±20%	17.00	2.8	>0.99	2.45	0.13	0.16	0.16	0.10	0.14

1	When ordering, please specify termination and packaging codes: e.g. LPD4012-564MLC
	Termination:	L = Silver-palladium-platinum-glass frit Special order, added cost: T = RoHS tin-silver-copper (95.5/4/0.5) or S = non-RoHS tin-lead (63/37).
	Packaging:	C = 7" machine-ready reel EIA-481 embossed plastic tape 1000 parts per full reel). B = Less than full reel In tape, but not machine-ready. To have a leader and trailer added ($25 charge), use code letter C instead. D = 13" machine-ready reel EIA-481 embossed plastic tape. Factory order only, not stocked (3500 parts per full reel).

2	Inductance shown for each winding, measured at 100 kHz, 0.1 Vrms, 0 Adc on an Agilent/HP 4284A LCR meter or equivalent. When leads are connected in parallel, inductance is the same value. When leads are connected in series, inductance is four times the value
3	DCR is for each winding. When leads are connected in parallel, DCR is half the value. When leads are connected in series, DCR is twice the value.
4	SRF measured using an Agilent/HP 4191A or equivalent. When leads are connected in parallel, SRF is the same value.
5	Leakage Inductance is for L1 and is measured with L2 shorted.
6	Isat: DC current, at which the inductance drops the specified amount from its value without current. It is the sum of the current flowing in both windings.
7	Irms, both windings: Equal current when applied to each winding simultaneously that causes a 40°C temperature rise from 25°C ambient. See temperature rise calculation.
8	Irms, one winding: Maximum current when applied to one winding that causes a 40°C temperature rise from 25°C ambient. See temperature rise calculation.
9	Ambient temperature range:	–40°C to +85°C with Irms current. +85°C to +125°C with derated current. Derating curve
10	Storage temperature range:	Component: –40°C to +125°C T&R packaging: –40°C to +80°C
11	Resistance to soldering heat: Three reflows at >217°C for 90 seconds (+260°C ±5°C for 20 – 40 seconds), allowing parts to cool to room temperature between.
12	Electrical specifications at 25°C.
Refer to Soldering Coilcraft Components before soldering.

Coupled Power Inductors LPD4012 Series

SPECIFICATIONS